dom/base/test/test_window_extensible.html

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TOR_BUG_3246
changeset 7
129ffea94266
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-1:000000000000 0:c4570a2029c5
1 <!DOCTYPE html>
2 <html>
3 <!--
4 https://bugzilla.mozilla.org/show_bug.cgi?id=856384
5 -->
6 <head>
7 <meta charset="UTF-8">
8 <title>Test for Bug 856384</title>
9 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
11 </head>
12 <body>
13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=856384">Mozilla Bug 856384</a>
14 <p id="display"></p>
15 <div id="content" style="display: none">
16 </div>
17 <iframe name="constructor" src="about:blank"></iframe>
18 <pre id="test">
19 <script type="application/javascript">
20 SimpleTest.waitForExplicitFinish();
21
22 function run()
23 {
24 is(Object.isExtensible(window), true, "Windows are extensible by default");
25
26 try
27 {
28 Object.preventExtensions(window);
29 throw "didn't throw";
30 }
31 catch (e)
32 {
33 is(e instanceof TypeError, true,
34 "preventExtensions(window) should throw a TypeError, instead got: " + e);
35 is(Object.isExtensible(window), true,
36 'Windows are extensible after an extensibility "change" attempt');
37 }
38
39 SimpleTest.finish();
40 }
41
42 window.addEventListener("load", run, false);
43 </script>
44 </pre>
45 </body>
46 </html>

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